Lamp stand



FIG. 1 is a front perspective view of the invention illustrating my design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is a right side elevation view thereof;

FIG. 6 is a top elevation view thereof; and,

FIG. 7 is a bottom elevation view thereof.

The broken lines shown are included for the purpose of illustrating unclaimed portions of the lamp stand, and form no part of the claimed design. 

The ornamental design for a lamp stand, as shown and described. 